condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.071563 0.0 0.214689 9 h after light 0.0675656 0.0 0.106333 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0